DESCRIPTION

The LTM?4659 is a complete 10A step-down switch-ing

mode μModule? regulator in a tiny 4mm × 4mm ×

1.43mm LGA package. The package includes the switching

controller, power MOSFETs, inductor and all support

components. Operating over an input voltage range of

2.25V to 5.5V, the LTM4659 supports an output voltage

range of 0.5V to VIN set by external resistors. Its

high-efficiency design delivers 10A continuous output current.

Only ceramic input and output capacitors are needed.

The LTM4659 employs a Silent Switcher 2 architecture

with internal hot loop bypass capacitors to achieve both

low EMI and high efficiency at high switching frequencies.

The LTM4659 also supports frequency synchronization, multiphase

operation, selectable pulse-skipping mode (PSM)

operation, and output voltage tracking for supply rail

sequencing. Its high switching frequency and a current

mode architecture enables a very fast transient response

to line and load changes without sacrificing stability.

Fault protection features include overvoltage, overcurrent,

and overtemperature protection. The LTM4659 is

lead(Pb)-Free and RoHS-compliant.

FEATURES

- Tiny Surface Mount, 4mm × 4mm × 1.43mm LGA

- Silent Switcher?2 Architecture

- Ultralow EMI Noise

- Input Voltage Range: 2.25V to 5.5V

- Output Voltage Range: 0.5V to VIN

- 10A DC Output Current

- Current Mode Control, Fast Transient Response

- Multiphase Parallel Current Sharing with

Multiple LTM4659s

- Output Soft-Start with Voltage Tracking

- External Frequency Synchronization

- Selectable Pulse-Skipping Mode

- Power Good Indicator

- Die Temperature Monitoring Output

- Overvoltage, Overcurrent, and

Overtemperature Protection

APPLICATIONS

- Telecom, Datacom, Networking System

- Optical Module

- Industrial Equipment

- Point-of-Load Regulation